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KIRKPATRICK. NUT LOOK. No. 258,930. Patented Jun 6, 1882.-

//// I\ I 1 ll 1 f WW I ATTORNEYE.

UNITED STATES PATENT ()FFIoE.

DAVID M.- KIRKPATRICK, OF KANSAS CITY, MISSOURI.

NUT-:L'OCK.

SPECIFICATION forming part of Letters Patent No. 258,930, dated June 6, 1882.

V Application filed May 3, 1882. (No model.)

.To all whom it may concern:

son and State of Missouri, have invented certain new and useful Improvements in Nut- Locks for Railway-Joints; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

Figure 1 is a perspective view, showing my invention applied to a railroad-rail joint. Fig. 2 is a perspective vieit of the fish-plate de tached. Fig. 3 is a perspective view of the lock-plate detached; and Fig. 4 is a vertical sectional view on the line a: m, Fig. 1.

Corresponding parts in the several figures are denoted by like letters of reference.

This invention relates to nut-locks for railway-joints, machinery, and all places where nuts are liable to work loose and come off the bolts 5 and it consists in the construction and arrangement of parts which will be hereinafter fully described, and particularly pointed out in the claim.

In the drawings hereto annexed I have shown my invention applied to a railway-rail joint.

A A represent the ends of two adjoining 'rails, and B C are the fish-plates, the lower Said nuts should be tightened until their sides assume a vertical position, as shown in the drawings.

I is the lock-plate, which is provided with a series of recesses, J, corresponding in number, size,'and location to the nuts H. Plate I has a tongue, K, projecting downward from its lower edge to enter a recess, L, in the flange D of the outer fish-plate, O.

M is a flexible metal strip clamped between the fish-plate G and the rail, and projecting beyond the upper. edge of the fish-plate, so that it may be turned down, as shown, over the lock-plate, and thus serve to secure the latter in position.

From the foregoing description, taken in connection with the drawings hereto annexed, the operation and advantages of myinvention will be readily understood. It is simple, economical, and easily adjusted, and is a complete safeguard against the nuts comin g loose. Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- As an improvement in nut-locks, the hereindescribed combination and arrangement of the bolts F, having nuts H, the fish-plate O, having flange D, provided with recess L, the flexible metal strip M,and the lock-plate I, having tongue K and recesses J, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

DAVID M. KIRKPATRICK. Witnesses:

ROBERT B. MrDDLEBRooK,

WILLIAM H. BROWN. 

